Home / 27,878.36-38,472.15-15,131.54

Finding the Fourth Proportional to 27,878.36, 38,472.15 and 15,131.54

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Solution

The fourth proportional to 27,878.36, 38,472.15 and 15,131.54 is: 20,881.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.36 : 38,472.15 = 15,131.54 : x
  2. Step 2: Convert to fraction form
    27,878.36/38,472.15 = 15,131.54/x
  3. Step 3: Cross multiply
    27,878.36x = 38,472.15 × 15,131.54
  4. Step 4: Simplify right side
    27,878.36x = 582,142,684.25
  5. Step 5: Solve for x
    x = 582,142,684.25/27,878.36
  6. Step 6: Final answer
    x = 20,881.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.